RZT1 + YT8512H How to config register EtherCAT Phy？
RZT1 + KSZ8041 is ok；but The MDC MDIO pin of the RZT1 + YT8512H was viewed with an oscilloscope without any waveform。
I have checked the hardware circuit and software configuration according to the RX72M+YT8512H given by the agent, but there is still no effect. I also consulted other friends but the results were the same.
I think the problem lies in the register configuration of RZT1, because the registers of RZT1 are older and there are many differences.
Note that the MDC pin can output waveform when configured as normal IO.Also referred to “an-r01an3169ej0110-rzt1-ethercat.zip”
What would cause MDC pins to have no waveform?
I need your help.
int main (void) { // --- Initialize board depend --- board_init(); /* Initialize the port function */ port_init(); /* Initialize the ECM function */ ecm_init(); /* Initialize the ICU settings */ icu_init(); cmt_standby(); /* ---- CMT Setting ---- */ /* Initialize CMT */ R_CMT_Init(CMT_CH_0, CMT_CKS_DIVISION_512); R_CMT_Init(CMT_CH_1, CMT_CKS_DIVISION_512); /* Start CMT */ R_CMT_CreatePeriodic(CMT_CH_0, 20, ledout); R_CMT_CreatePeriodic(CMT_CH_1, 10, inputinc); /*----------------------------------------------------------------------*/ /* setup EtherCAT */ /*----------------------------------------------------------------------*/ // --- Initialize EtherCAT --- EtherCAT_init(); /* set esc register base address */ pEsc = (MEM_ADDR ESCMEM *) ESC_BASE; /* initialize the EtherCAT slave interface */ HW_Init(); /* enable irq */ R_ETHER_IRQ_Init();
Hello,
RZ/T1 and RX72M embedded with the same EtherCAT Slave Controllers(Beckhoff IP Core V2.04). So the function should be the same. Different configuration might have certain impact to the register setup in device to device. Difference could be in ESC register base address. But RZT1 registers are not “old”.
If YT8512H works with RX72M, it is expected and should work with RZ/T1. Does the combination RX72M+YT8512H is practically working correctly under EtherCAT?
I had a quick search on Beckhoff PHY Selection Guide(https://download.beckhoff.com/download/document/io/ethercat-development-products/an_phy_selection_guidev2.7.pdf). YT8512H is not listed under chapter 2.3.3 Example Ethernet PHYs. After all you can also check the Chapter 2.1 Ethernet PHY Requirements for EtherCAT to see if YT8512H can fulfill the EtherCAT PHY requirements.
There are two MDIO interface and I am not sure if you have applied the right PinMux setting to see the right MDC webform. Please check the right PinMux for the right MDIO interface.
you Guide is Very valuable for reference.
The ETG is providing a lot of valuable documents regarding the EtherCAT Slave Controller (ESC) and the requirements of the PHYs for the ESCs. In the document "Application Note – PHY Selection Guide Requirements to Ethernet PHYs used for EtherCAT and EtherCAT G Ethernet PHY Examples" you find the very concrete requirement which is most probably answering your evaluations of not seeing MDIO interface traffic (then the test found that the MDIO pin had no waveform):